UC-NRLFTG a51 533. ILCULATION TOBK ". - 3 I l I THE VAN NOSTRANC SCIENCE SERIES. 16mo. Boards. Price 50 Cents Each. Illustrated when theAmply Subject Demands. LIBRARY OF THE OFUNIVERSITY CALIFORNIA. Cla&s '. TREATISE9.-A ON FUEL, ArthurBy V. Abbott, C.E. Founded or, tht treatiseoriginal of C Will- iam Siemens, D.C.L. No. 10. COMPOUND ENGINES Translated from the French of A. Maliet. Second edition, revised, with results of American Practice by RichardH C.E.Buel, No. 11. THEORY OF ARCHES. Prof. W.By Allan. No. 12. OF VOUSSOIR ARCHES. Prof. W.By ? Cain. Second revisededition, and enlarged. No. 18.-GASES MET WITH IN COAL-MINES. J. J.By Atkinson. Third edition, revised and enlarged Edwardby H. Williams, jun. 14. FRICTION OFNo. AIR IN MINES. J.By J. Atkinson, j Second American edition. No. 15. SKEW ARCHES. Prof. E. W.By C.E. Illustr.Hyde, No. 16. A GRAPHIC METHOD FOR SOLVING CERTAIN ALGEBRAIC EQUATIONS. Prof. G. L. Vose.By No. 117. WATER AND WATER-SUPPLY. Prof. W. H.By Oorfteld of the University London.College, Second American edition. 18. SEWERAGE AND ISEWAGE PURIFICATION. By ' ' ' 'M. N . Assoc :ate :Baker, Ed tor News. IEngineering THE VAN NOSTRAND SCIENCE SERIES. TRANSVERSENo. 19.-STRENGTH OF BEAMS UNDER author ofLOADS. Prof. W.By Allan, "Theory of Second edition, revised.Arches." No. 20.-BRIDGE AND TUNNEL CENTRES. John B.By Second edition.McMaster, C.E. No. 21.-SAFETY VALVES. Second Edition. RichardBy H. C.E.Buel, E. Sherman Gould,No. 22. HIGH MASONRY DAMS. By M. Am. Soc. C.